201721738165

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{643}}^1\times {\mathrm{2727997}}^1$

素因数の和:2728668

約数の個数: 16

約数和(自身を含む): 252983622528

約数和(自身を除く): 51261884363

約数列:

[1, 5, 23, 115, 643, 3215, 14789, 73945, 2727997, 13639985, 62743931, 313719655, 1754102071, 8770510355, 40344347633, 201721738165]

約数ペア:

[(1, 201721738165), (5, 40344347633), (23, 8770510355), (115, 1754102071), (643, 313719655), (3215, 62743931), (14789, 13639985), (73945, 2727997)]